I started my smart home setup with Amazon Echos, a Nest thermostat, Blink cameras, and a Ring doorbell and Ring Floodlight cam. Shortly after I installed my Nest thermostat, Google purchased Nest.
I am a big fan of the Homekit ecosystem because of Apple's emphasis on privacy and I have now replaced all my Echos with HomePods, my Blink cameras with Homekit compatible Eufy 2C cameras w/ local storage (soon to be Homekit Secure Video compatible) and an Ecobee 3 Lite (no Alexa) thermostat. My next project is to replace my Ring Doorbell and Floodlight cam as soon as Eufy (or someone else) releases a Homekit compatible versions. From now on I am not buying any IoT devices unless they are truly Homekit compatible (not just an iOS app).
The Eufy cameras are insanely expensive
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Then don’t use any cameras whatsoever. Law enforcement can request anything they want. So if you’re afraid of requests, just don’t even use any cameras.
I’ve moved from Nest to a setup consisting of Reolink cameras and a Synology Rackstation with the surveillance package. Works like a charm, only runs locally and I’m finally compliant with Swiss law (which says that you need to erase your footage every 24 hours unless something has happened). They can request anything they want - any footage that’s older than 24 hours is gone